In the vue project, how to filter out the common elements in the three arrays or how to filter out different elements can also be done.

    var a = ["1", "2", "3"]
    var b = ["2", "3"]
    var c = ["4", "5","2"]
Javascript
Jan.10,2022

a.filter (I = > b.some (_ I = > _ I = I) & & c.some (_ I = > _ I = i)) 

let a = new Set([1, 2, 3]);
let b = new Set([4, 3, 2]);

// 
let union = new Set([...a, ...b]);
// Set {1, 2, 3, 4}

// 
let intersect = new Set([...a].filter(x => b.has(x)));
// set {2, 3}

// 
let difference = new Set([...a].filter(x => !b.has(x)));
// Set {1}
let a = ['1', '2', '3', '5'];
let b = ['2', '3', '5'];
let c = ['4', '5','2'];

console.log(getCommon(a, b, c));    // ['2', '5']

function getCommon(arrA, arrB, ...others) {
    if (others.length == 0) {
        return _two(arrA, arrB);
    } else {
        return getCommon(_two(arrA, arrB), ...others)
    }

    // 
    function _two(a, b) {
        return a.filter(el => b.includes(el));
    }
}

fn accepts any array that needs to be filtered 

  https://www.cnblogs.com/small., this can be handled with PHP, jquery does not know

Previous: About the use of art-template

Next: How discuzX3.4 invokes different classified topic lists

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
© 2021 CodesHelper
Advertising Contact us About us
Menu